Bilger, Burkhard. Global Warming / Burkhard Bilger. - New York : Chelsea House, c1992. - 120 p. : ill. ; 24 cm. - Earth at Risk . Includes index. 331 331 ISBN: 0-7910-1575-0 0-7910-1625-0 Subjects--Topical Terms: Global warming.Greenhouse effect. Dewey Class. No.: 363.7387 / B492g